Mathematical Double-Struck Digit One 𝟙

𝟙
U+1D7D9
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Symbol Meaning

Mathematical Double-Struck Digit One. Mathematical Alphanumeric Symbols.

The symbol “Mathematical Double-Struck Digit One” is included in the “Double-struck digits” subblock of the “Mathematical Alphanumeric Symbols” block and was approved as part of Unicode version 3.1 in 2001.

Unicode Name Mathematical Double-Struck Digit One
Unicode Number
HTML Code
CSS Code
Unicode Block Mathematical Alphanumeric Symbols
Unicode Subblock Double-struck digits
Unicode Version 3.1 (2001)
Version 3.1
Block Mathematical Alphanumeric Symbols
Type of paired mirror bracket (bidi) None
Composition Exclusion No
Case change 1D7D9
Simple case change 1D7D9
Math +
ID_Continue +
XID_Continue +
Grapheme_Base +
age 3.1
scripts Common
Encoding hex dec (bytes) dec binary
UTF-8 F0 9D 9F 99 240 157 159 153 4036861849 11110000 10011101 10011111 10011001
UTF-16BE D8 35 DF D9 216 53 223 217 3627409369 11011000 00110101 11011111 11011001
UTF-16LE 35 D8 D9 DF 53 216 217 223 903403999 00110101 11011000 11011001 11011111
UTF-32BE 00 01 D7 D9 0 1 215 217 120793 00000000 00000001 11010111 11011001
UTF-32LE D9 D7 01 00 217 215 1 0 3654746368 11011001 11010111 00000001 00000000

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